Improvement in liquid-meters



SheetS SheetI 1. H. O. SERGEANT'.- LIQUID METER.

No. 111,262. Patented Jan. 24, 18-71.

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H.- 0. SERGEANT.

LIQUID METER.

No. 111,262. Patented Jan. 24, 1871.

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HENRY snacnanr, or NEWARK,

NEW JERSEY, ASSIGNOR TO JOSE F.

DE NAVARRO, OF NEW YORK CITY Letters Patent No. 111,262, dated January'Z l, 1871.

IMPROVEMENT IN LIQUID-METERS.

The Schedule referred .to in these Letters Patent and making part of the same.

To cllwhom may concern;

' Be it known that I, HENRY O. SERG'EANT, of Newark, in the county of Essex and State of New Jersey, haveinvented a new and useful Improvement in Fluid.- Meters, of which the 'fiillowing is a. .full, clear, and

exact description, reference being had tothe accon1 penying drawing forming part of this specificat-ion,

and in which" Figure-1 represents a top view orplan oiv a meter constructed in accordance with my improvement, the registering mechanism and capplate covering the chamber which incloses said mechanism being removed;

Figure 2, a vertical longitudinal-section taken as indicated by the line a; a: in fig. 1

Figure 3, an under view of one of the pistons;

Figure 4, an inverted plan of the meter, with its bottom and end-covers removed;

Figure 5, a central transverse section through the meter; and

Figure 6, an inside face view of the bottom'cover.

Similar letters of reference indicate corresponding parts. i

' My invention relates to meters constructed, so far as the general or leadingfeat-nres are concerned, siln-' ilar to a meter previously invented by me, and de-v scribed in Letters Patent oi the United States No. 103,509, hearing date May 24, 1870, and in which two pistons, working in independent cylinders, are used, and said pistons, in addition to their function proper within the cylinder-stir make of the latter measuringchambe rs, also operate as valves, the one to the other, and so that they serve to control, without the aid'oi separate valves, the-ingress and egress of-the fluid to or from each other at opposite ends alternately,

In such previous invention, however, whioh iucluded' a novel arrangement.of-oavitiesand passages to effect in an advantageous manner such operation of the meter, the pistons moved independently of each other, and were in uowise connected by mechanical adjuncts to make them work in unison or in proper relation with each other, so that, in the event of one piston moving more freely than. the other, or from any other cause having its timely action changed relatively to the other, as is apt to occur under a light stream, an imperfect operation of the meter necessarily ensued.

In my present improvement- I make positive or certain the movements of the pistons relatively to each other by mechanically connecting the pistons through means of cranks, pit-men, and a revolving shaft, all arranged tooccupy an interior position relatively to the pistons and their cylinders, and serving to give the necessary motion to the registering mechanism; and

This invention consists in anovcl arrangement of out-side openings in the cylinders, and arrangement of abearing-box for the crank-shaft withinor through the passage that establishes connection between the cylinders, whereby every facility is aiforded for fitting the bearing-box to its place, and for making good the ter, together with durability and freedom from liability of the parts to work loose. 1

Referring to the accompanying drawing- 7 A A represent the two cylinders, arranged side by side, and closedat their ends by covers a, c.- g

B B are the elongated hollow pistons, arranged to reciprocate within the cylinders, and constructed to operate as. valves, the one to the other, as in my previously-patented meter, hereinbefore referred'to, but the passages are diii'erently proportioned or arranged and others added, to make room for the'mechanical' adjuncts, whereby the pistons are-geared together to insure the pistons working in proper reiatiou with each. other. Said pistons may be made entirely open at their sides and top between their opposite ends, which need. simply be connected bya vatvuia-r base-piece, but they are here shown as formed with enlarged side-openings 7;,which, in conjunction'with an opening, 0, between the cylinders, serve to establish constant communication between the interior of the pistons and the-inlet of the meter; also which incidentally serve, in connection with openings 9 g madein the outside of the cylinder, forthe introduction of the mechanism through which the pistons are connected alternately by pitmen E E pivoted to the rear ends of the pistons.-

ihis mechanism consists of a crank-shaft, F, carrying difierently and appropriately-set or pitched cranks (l d, to which the pitmen E E are attached, and a hearing-box, G, which may either-be made whole or opening 0 between the cylinders, and being secured or. prevented from turningby a set-screw, f, introduced through the base of" the chamber H, which serves to contain the registering-mechanism,

, To offset this introduction of the mechanism which couples the pistons, and to provide for establishing the connection of the some, including the placing of the box G; likewise the insertion of the crank-shaft E with its'craaks d d,- also attaohmontto the cranks of the pitmen E E that are pivoted to the pistons in advance, it is not only necessary that the side openlugs 11- in the pistons should be made enlarged, or the pistons be cut away between their ends, as described, but also that openings g gshonld he made in theoutsides of the cylinders, opposite the opening 0, of suih cien't capacity to receive through themthe box G, the

crank-shaft l and the cranks d d, and to give room connection of thepistonatln-ough their pitnien, withthe cranks of the shaft, and whereby cheapnessand compactness is insured in theconstruction of the me-.'

he fitted with caps c c for support of the crankshaft, said .hox G being made to fit and project through the The one, g, of these openings is here shown as 1 forming or being in connection with the inlet that is provided with a screw-cap coupl ng, D, to allow of theattaehment of the meter to a suitably-sized supplypipe, but such opening may be the outlet from the meter, or be an independent opening. The other opening, 9, is provided with a blind or close cap, D.

On the crank-shaft F is cut a screw, i, that serves to give motion to a worm-wheel, If, on an upright spindle, i, which actuates the registering. mecl'ianism,

-The operation of the pistons is kept up in like manner. to that described for my improved meter patented May 24, 1870, in which the pistons not only operate also as valves, but likewise as receivers for the fluid under pressure before it passes to the cylinders, the latter being provided at their bottoms with opposite end-passages an mm m, and with intermediate ports no 0 a o" 0-, the end-passages m m of the one cylinde'r A connecting by oblique passages 11 1) made in "the bottom of the meter with the intermediate ports 0 0 of the cylinder A, and the central intermediate ports at n of the two cylinders being in connection with a general passage, q, in the bottom, which passage is in direct communication with the exhaustbranch 1'.

The end-passages an m of the cylinder A connect respectively with cavities or passages s s, and the ports 0 o of the cylinder A with cavities or passages t i in the bottom of the meter.

These cavities or passages s s and t t are connected by eross-passages 'u u made in a cover, I, of the meter bottom, the one cross-passage to connecting the cavity 8 with the cavity t, and the other cross-passage a thecavities s and t.

By means of these several ports and. passages, together with the open construction of the pistons be tween their heads or opposite ends, the communicating passage 0 between the cylinders A A, opposite end-passages c cand a central D-shaped or valvular cavity, 20, in either piston, is a continuous reciprocating action of the pistons kept up,when turning on a flow or supply of fluid through the meter, the action being the same under a reversal of the flow through the meter by making the passage -r the inlet instead of the outlet.

What is here claimed, and desired to be secured by Letters Patent, is- I 1. In a meter in which the-pistons of the measuring-cylinders or chambers also act as valves to each.

other, the arrangement and. support within and through the opening or passage which establishes communication between the cylinders, of the bearing-box for the crankshaft, by which the pistons, through their re speetivepit-men, are connected to work in unison, sub

'stantially as specified.

2. The combination and arrangement of the openiugs g g", in the outsides of the cylinders, relatively to the bearing-box G of the crank-shaft 1 whereby said box, shaft, and cranks may be inserted through the side or sides of the meter, and provision is made for establishing connection of the pitmen by which the pistons are linked to the cranks, essentially as herein set forth.

Witnesses: W HENRY O. SERGEA-N'L hnnn. Hixvnns', Fnnn Tosca. 

